Uhlobo olulodwa kweziyisikhombisa zoshaka kanye nemisebe kusengozini yokushabalala ngenxa yokudoba ngokweqile, ngokusho kwentsha yeminyaka eyisishiyagalombili. cwaningo ekhishwe namuhla kujenali Isayensi.
Ikakhulukazi, ukuhlaziya kutholwe ukuthi oshaka nemisebe kubanjwa njengengozi yengozi ezindaweni zokudoba okuqondiswe kuzo izinhlobo ezibaluleke kakhulu kwezentengiso. Nokho, zigcinwa ngenxa yenani lamafutha nenyama yazo. Lokhu, ngokubambisana nokwanda kwakamuva emhlabeni jikelele ekuhwebeni kukawoyela wesibindi sikashaka, kube nomphumela wokwehla kwenani labantu.
“Cishe ingxenye yoshaka bomhlaba itholakala ngaphansi kwamamitha angu-200, ngaphansi kwalapho ukukhanya kwelanga kufinyelela khona olwandle,” kusho uNicholas Dulvy, UProfesa Distinguished SFU we-Marine Biodiversity and Conservation.
Lapho beqala ukubona ukukhanya kwelanga yilapho bedonselwa phansi esikebheni sokudoba.”
Lokhu kuhlaziya okusha kuka-Dulvy kuhlole izinhlobo ezingaphezu kuka-500 zoshaka nemisebe futhi kwabandakanya ochwepheshe abangaphezu kwama-300 abavela emhlabeni jikelele. Ithole ukuthi cishe izinhlobo ezingu-60 zisengozini enkulu yokushabalala ngenxa yokudoba ngokweqile, ngokwemibandela ye-International Union for Conservation of Nature (IUCN) Red List of Threatened Species.
“Njengoba ulwandle oluphakeme kanye namanzi asogwini kuncipha emazweni amaningi omhlaba, sigqugquzela abadobi ukuthi badobe phesheya kwezilwandle futhi sekusebenza ubuchwepheshe ukudoba ukujula ngekhilomitha,” kusho uDulvy.
Oshaka bamanzi ajulile kanye nemisebe kuphakathi kwezilwane ezinomgogodla zasolwandle ezizwela kakhulu ngenxa yokuphila isikhathi eside kanye namazinga aphansi okuzala. Banemijikelezo yokuphila efana kakhulu nezilwane ezincelisayo zasolwandle njengemikhomo nama-walrus, ngaphambili okwakuxhashazwa amafutha azo futhi manje avikelekile kakhulu.
“Oshaka abaningi basolwandle kanye nemisebe bakwazi ukumelana nenani elincane kakhulu lokucindezela kokudoba,” kusho uDulvy. “Ezinye izinhlobo zezilwane zingase zithathe iminyaka engu-30 noma ngaphezulu ukuvuthwa, futhi ngokunokwenzeka kuze kube iminyaka engu-150 endabeni kaShaka waseGreenland, futhi zikhiqize imidlwane engu-12 kuphela kukho konke ukuphila kwazo.”
Oshaka nemisebe balondoloza ukuvungama kwabo ngokuba nesibindi esinamafutha, kodwa lawa mafutha aziswa kakhulu. Isetshenziswa kakhulu kuzimonyo, izithasiselo zomsoco kanye nemithi, njengemithi yokugoma. Kuphinde kwaba nokwenyuka kwezindawo zokudoba i-skate ukuze kusekelwe isidingo sokushibilika kwe-skate, ukudla okuvamile kwase-Korea.
“Kube nempumelelo enkulu ekulawuleni ukuhwebelana ngezici zoshaka. Manje sidinga ukugxila ekulawuleni ukuhwebelana kwamazwe ngamazwe ngamafutha esibindi. "
Ngaphezu kokulawula ukuhwebelana kwamazwe ngamazwe ngamafutha esibindi sikashaka, lolu cwaningo luphinde lugunyaze ukucindezela komhlaba wonke ukuvikela amaphesenti angu-30 olwandle olwandle ngo-2030. Ukuvikela amaphesenti angu-30 olwandle olujulile (amamitha angu-200 kuya kwangu-2,000) kuzohlinzeka ngamaphesenti angu-80. kwezinhlobo zokuvikela ngokwengxenye kulo lonke uhla lwazo. Ukuvinjelwa komhlaba wonke ekudobeni okungaphansi kwamamitha angu-800 kuzonikeza indawo yokukhosela eqondile engamaphesenti angu-30 engxenyeni yesithathu yoshaka basolwandle abasengozini kanye nemisebe.
I-Global Shark Trends Project iwukubambisana kwe-Simon Fraser University, IUCN Shark Specialist Group, i-James Cook University, kanye ne-Georgia Aquarium, eyasungulwa ngokusekelwa yi-Shark Conservation Fund.
Ibhalwe nguJeff Hodson
Source: I-SFU
